Hi, We have a app with some auto-renewing subscription in a group of subscriptions.
When a user upgrade from a subscription to another, the "user receive a refund of the prorated amount of their original subscription" (https://developer.apple.com/app-store/subscriptions/).
How is the prorated calculated ?
Example : subscription to 14,99$ / month. If subscriber upgrade after 10 days, is the refund calculated 10/30 of 14,99$ (so ~5$) ?